The Internet scandal of the day is that the dog above wasn’t exposed to Ebola. That’s a good thing! But it’s bad for news outlets that included the photo in their coverage of a very similar-looking dog being quarantined because of Ebola exposure.

The New York Post and Daily Mail—along with others that followed their lead—included the bath photo in their coverage of Bentley, the Cavalier King Charles Spaniel owned by Nina Pham, the Dallas nurse who contracted Ebola last week. Legitimate photos of the real Bentley being quarantined were also i...